We show by counterexample that one of the results in the paper
"On Pareto optima, the Fermat-Weber problem, and polyhedral gauges", by
R. Durier, <EM>Mathematical Programming</EM> 47 (1990), does not hold. 
The stated characterization of properly efficient points for a scalar
location problem is only true in dimension 1 and 2. For higher dimensions,
the property stated is necessary, but not sufficient, in contrast to what is
said in the paper mentioned above.